Apparatus for coating pipes and the like



A. G. PERKINS Nav. 24, 1942.

' APVYARATAUS FOR COATING PIPES AND THE LIKE Filed Nov. 16, 1940 l @venir/07; @wf MJ,

1,3 ,.oruqy.

Patented Nov. 24, 1942 APPARATUS Fon Co THE LIKE ATING PIPES AND Albert G. Perkins, Warsaw; N. Y., assigner to Centriline Corporation, Ampere, N. J., a corporation of Delaware Application November le, 1940, serial No. 365,915

' (cl. ell- 44) 3 Claims.

This invention relates generally to certain new and useful improvements in apparatus for applying a protective coating or lining to the inner` walls of pipes, conduits and the like, but more particularly to improvementsin the means for distributing the coating material onto the pipe wall.

It has for one of its objects to provide an apparatus of this character having avdistributing means which is so designed as to provide for a continuous feed oi the. material without clogging and without interruption, whereby an even and mediate its ends this screw passes through threaded openings I6 in the carriage and an elec-.fV

5 tric motor l1 mounted in the frame I4 Aand connected by interposed gearing I8 with the screw serves to turn the screw at a slow speed in one direction or the other.

Surmounting the frame Il is a hopper II for receiving the mortar-like coating material and from the lower end of which projects a horizontally-disposed feed conduit 20 about which the pipe to be treated is concentrically disposed, so

uniform distribution of the coating` material or mortar is applied to the pipe wall.

Another object of the invention is to provide a distributer head for pipe coatingv apparatus which is designed to provide for the free and uninterrupted passage ot the mortar in an axial direction onto a distributing cone andthence be.

tween blades of a rotary dispenser for. centrifugal application to the pipe wall.

VA further object is to provide the distributer that as the pipe is moved axially by the carrier il relative. tothe conduit, the mortar is applied by .my improved head to the inner -wall of the pipe' by centrifugal force. Contained in the conduit and extending part way into the lhopper i. n Y

is a screw conveyor. 2l for propelling the-coating material from the hopper to the front or dlshead with means for preventing a too free down or gravity flow of the mortar as it reaches the head and at the same time affords means for eliminating clogging of the mortar at the center of the head.

In the accompanying drawing: Figure 1 is a sectional side elevation of the coating apparatus showing my improved distributer head applied thereto. Figure 2 is an en-- l.

taken in the plane of line 2-2 of Figure 1. Figure 3 is a face view of the distributer head with y the front plate thereofand its cone removed.'

Similar characters of reference indicate cor- 4 responding parts lthroughout the several views;

While my improved dlstributer or dispensing head may be applied to various types oi pipe coating apparatus, it has been shown, by way of example, in connection with an .apparatus for treating the inner walls of pipe lines of comparal carriage ll guided on suitable'tracks l2. Any 5 suitable means may be employed for transmitting motion to the carriage, that shown in the drawing. consisting of a revolving power -screw I3 journaled at one end in a base member or frame i4 and at its upper end in a bracket l5. Inter- 55 priate gearing 2l.

charge end 22 of the conduit.- This feed is ,iournaled at-one end in the side wall of the' hopper while its opposite `end is journaled in a bearing member 23 arranged adjacent-the d ischarge end of the conduit. As shown in Figure Y ljthis feed .screw may be driven at. a

tively slow speed from the motor I'l by appro- The discharge end of the con-f duit vpreferably includes a forwardly-tapering section Il which constitutes :a chamber-'into y which the mortar is delivered by feed screw il',

anda cylindrical Apox-tion It of comparatively smallV diameter which is'open -at its forward end 4 larged fragmentary longitudinal section thereof 't0 dlhl'' the mortar directly into the dilpensingorapplicator head indicated generallyv by the. numeral 21. This construction 'assures .a maximum'amount vof mortar to be contained in the discharge end'of the conduit and a steady vsupply of mortar being delivered to the dispone ing head to assure l. uniform and aocurateeoat- `ing of mortar onto the pipe walL This dispensing lhead receives the from the axial-discharge end of the feed conduitsection 2B and is rotated at high speed to deliver the miel-lul by centrifugal force onse the pipe While any suitable means may be erafl wall. ployed for rotating the dispensing head, I have provided an'electric drive unit in the form of an electric motor which is mounted directly' on the i A conduit-section 26 and consists of a' stator 'or I field 28 bolted or 'otherwise secured to such section and a rotor or armature 29' free to revolve on a bearing sleeve 3l applied to said section, as shown in Figure 2. Connected to the flanged end 3l of this rotor is the distributor head. which consists of` axially spaced plates 32 and 33 between which are disposed suitably spaced radial blades 34 forming intervening passages for the discharge of the material onto the pipe wall. These blades terminate short of the center or hub portion of the head and outwardly of the discharge opening of the conduit-section 26 to provide an uninterrupted iiow of mortar to the center of the head. Applied to the head-plate 33 in opposing relation to the axial discharge of the feed conduit is a substantially conical deector or distributor element 35 which intercepts the mortar discharged from the end of the conduit section 26 and directs it evenly and uniformly to the radial spaces between the blades 34 to thereby effect a uniform distribution of the mortar throughout the head and consequently assure a uniform distribution of the mortar about the pipe Wall.

By this construction a continuity of feed of the mortar to the distributer head is maintained at all times without interruption. there being no obstruction in its path impeding such continuous feed of the mortar, and the conical disfrom, the hub portion of said dispensing memtributer element assures the proper distribution of the material to all parts. of the dispensing head. To prevent the normal tendency of the mortar dropping by gravity into 'the lower portion of the dispensing head, I provide the lower portion of'the front end of the conduit section 26 with a baille or intercepter 3B which extends into the hub portion of the dispenser head to a point short of the distributer element 35. This intercepter spans or bridges the companion inner end of the bladed portion of the head and thereby prevents a too free flow of the mortar by gravity into such portion of the head.

I claim as my invention:

1. An apparatus for lining pipe walls and the like, comprising a feed conduit for the coating material having an axial discharge, and a revolving dispensing member disposed in operative relation to said conduit-discharge for receiving and discharging the material centrifugally thererelation with and in opposing relation to the conduit-discharge for intercepting the material and distributing it uniformly toward the inner portion of the dispensing member, the discharge end of said feed conduit' having an extension at its bottom side projecting into the hub of said dispensing member adjacent its deflector element.

2. An apparatus for lining pipe walls and the like| comprising c feed conduit for the coating material having an axial discharge, and a revolving dispensing member disposed in operative relation to said conduit-discharge for receiving and discharging the material centrifugally therefrom, said dispensing member having means l thereon outwardly of its hub and radially beyond said conduit-discharge for directing the material by centrifugal force onto the pipe'wall.

and a distributor element oi' substantially conical shape applied. to the hub portion of said dispensing member in axially opposed relation to the conduit-discharge, the discharge end of said feed conduit having an extension at its bottom side its material-directing means and its'distributor elementand constituting a baille for retarding the gravity ow of the material into said member. l 3. An apparatus for lining pipe walls and the like, comprising a feed conduit for the coating material having an axial discharge, a revolving dispensing member disposed in operative enclosing relation to said conduit-discharge for receiving and discharging the material centrifugally therefrom, and means extending from the bottom side of the discharge end of said conduit into the adjoining portion of said dispensing member for baiiiing the gravity iiow of the material thereto. Y

ALBERT G. PERKINS.

` projecting into said dispensing member between 

